130 lines
8.5 KiB
HTML
130 lines
8.5 KiB
HTML
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<title>std::experimental::erase (std::forward_list)</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_experimental_forward_list_erase skin-cppreference2 action-view cpp-page-template cpp-navbar">
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::experimental::</span>erase <small>(std::forward_list)</small></h1>
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<div id="bodyContent">
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-experimental.html">experimental</a></span></div>
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<div class="t-page-template" style="">
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<div>定义于头文件 <code><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/header/experimental/forward_list&action=edit&redlink=1" class="new" title="cpp/header/experimental/forward list（页面不存在）"><experimental/forward_list></a></code></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T, <span class="kw1">class</span> A, <span class="kw1">class</span> U<span class="sy1">></span><br />
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<span class="kw4">void</span> erase<span class="br0">(</span><a href="cpp-container-forward_list.html"><span class="kw1273">std::<span class="me2">forward_list</span></span></a><span class="sy1"><</span>T, A<span class="sy1">></span><span class="sy3">&</span> c, <span class="kw4">const</span> U<span class="sy3">&</span> value<span class="br0">)</span><span class="sy4">;</span></span></div>
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<td class="t-dcl-nopad"></td>
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<td><span class="t-mark-rev t-since-libfund-ts-2 t-mark-ts">(库基础 TS v2)</span></td>
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<p>从容器擦除所有比较等于 <code>value</code> 的元素。等价于 <span class="t-c"><span class="mw-geshi cpp source-cpp">c.<span class="me1">remove_if</span><span class="br0">(</span><span class="br0">[</span><span class="sy3">&</span><span class="br0">]</span><span class="br0">(</span><span class="kw4">auto</span><span class="sy3">&</span> elem<span class="br0">)</span> <span class="br0">{</span> <span class="kw1">return</span> elem <span class="sy1">==</span> value<span class="sy4">;</span> <span class="br0">}</span><span class="br0">)</span><span class="sy4">;</span></span></span></p>
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<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">参数</span></h3>
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<td>c</td>
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<td>-</td>
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<td>要从中擦除的容器</td>
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<tr class="t-par">
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<td>value</td>
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<td>-</td>
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<td>要移除的值</td>
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<h3><span class="mw-headline" id=".E5.A4.8D.E6.9D.82.E5.BA.A6">复杂度</span></h3>
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<p>线性。</p>
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<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">示例</span></h3>
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<div class="cpp source-cpp">
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<pre class="de1"><span class="co2">#include <experimental/forward_list></span>
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<span class="co2">#include <iostream></span>
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<span class="kw4">auto</span> show <span class="sy1">=</span> <span class="br0">[</span><span class="br0">]</span><span class="br0">(</span><span class="kw4">const</span> <span class="kw4">auto</span><span class="sy3">&</span> container<span class="br0">)</span> <span class="br0">{</span>
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<span class="kw1">for</span> <span class="br0">(</span><span class="kw4">auto</span> e <span class="sy4">:</span> container<span class="br0">)</span> <span class="br0">{</span>
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<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1"><<</span> e<span class="sy4">;</span>
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<span class="br0">}</span>
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<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1"><<</span> <span class="st0">'<span class="es1">\n</span>'</span><span class="sy4">;</span>
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<span class="br0">}</span><span class="sy4">;</span>
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<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
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<span class="br0">{</span>
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<a href="cpp-container-forward_list.html"><span class="kw1273">std::<span class="me2">forward_list</span></span></a><span class="sy1"><</span><span class="kw4">int</span><span class="sy1">></span> data<span class="br0">{</span><span class="nu0">1</span>,<span class="nu0">1</span>,<span class="nu0">1</span>,<span class="nu0">4</span>,<span class="nu0">1</span>,<span class="nu0">1</span>,<span class="nu0">1</span>,<span class="nu0">2</span>,<span class="nu0">1</span>,<span class="nu0">1</span>,<span class="nu0">1</span><span class="br0">}</span><span class="sy4">;</span>
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show<span class="br0">(</span>data<span class="br0">)</span><span class="sy4">;</span>
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std<span class="sy4">::</span><span class="me2">experimental</span><span class="sy4">::</span><span class="me2">erase</span><span class="br0">(</span>data, <span class="nu0">1</span><span class="br0">)</span><span class="sy4">;</span>
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show<span class="br0">(</span>data<span class="br0">)</span><span class="sy4">;</span>
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<span class="br0">}</span></pre></div>
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<p>输出：</p>
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<div dir="ltr" class="mw-geshi" style="text-align: left;">
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<div class="text source-text">
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<pre class="de1">11141112111
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42</pre></div>
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<h3><span class="mw-headline" id=".E6.B3.A8.E8.A7.A3">注解</span></h3>
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<p>不同于 <span class="t-lc"><a href="cpp-container-forward_list-remove.html">std::forward_list::remove</a></span> ，此函数模板接受异相类型，并在调用 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="sy1">==</span></span></span> 运算符前不强制转换到容器的 value_type 。</p>
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<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">参阅</span></h3>
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<div class="t-dsc-member-div">
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<div><a href="cpp-algorithm-remove.html"><span class="t-lines"><span>remove</span><span>remove_if</span></span></a></div>
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</div>
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</td>
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<td>移除满足特定判别标准的元素<br />
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<span class="t-mark">(函数模板)</span></td>
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<div><a href="cpp-container-forward_list-remove.html"><span class="t-lines"><span>remove</span><span>remove_if</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
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</div>
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</td>
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<td>移除满足特定标准的元素<br />
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<span class="t-mark">(<code>std::forward_list<T,Allocator></code> 的公开成员函数)</span></td>
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<div><a href="cpp-experimental-forward_list-erase_if.html"><span class="t-lines"><span>erase_if<span class="t-dsc-small">(std::forward_list)</span></span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-libfund-2-ts t-mark-ts">(库基础 2 TS)</span></span></span></div>
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<td>从 <span class="t-lc"><a href="cpp-container-forward_list.html">std::forward_list</a></span> 擦除所有满足谓词的元素<br />
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<span class="t-mark">(函数模板)</span></td>
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<div class="visualClear"></div>
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